Помогите пожалуйста Choose the correct option a-c to complete the sentences1.

Помогите пожалуйста
Choose the correct option a-c to complete the sentences
1. The company ........ in car sales for many years. a) dealt b) has been dealing c) was dealing
2. Вefore John celebrated his 26th birthday, he....... his own company. a) started b) has started c) had started
3. By the end of the month I .........this project.
a) will finish b) will have finished c) finish
4. The manager .....our branch office three times so far this year.
a) visited b) has visited c) visits
5. He......... for this company for the years.
a) has been working b) worked c) was working
6. This strategy seems to be good. Sales of our products .........for some time.
a) increase b) are increasing c) have been increasing
7. The number of employees cycling to work.........
a) increased b) have increased c) has increased
8. We........ to an agreement on the terms of payment before you arrived.
a) have come b) had come c) came